如何使用SDWebImage从内存缓存中获取图像？

Question

I have implemented SDWebImage in cellforrowatindexpath method. The problem here is when i scroll down the tableview the images are loading from web which is expected but when i scroll up the tableview the images are again downloading. What is the way to get rid of this problem. I don't want to load images from url overtime (since there is a usage limit with the web service call). I chose to use SDWebImage API for in memory cache so that once the images are loaded they are taken from cache to show it on the UI instead of making the web service call everytime. Here is my code:

[cell.placeImage sd_setImageWithURL:url placeholderImage:nil options:SDWebImageCacheMemoryOnly];

The above line is the only code in that method. Please help me. Any kind of help is appreciated. I have seen other questions in this community but nobody said how to get an image from the cache memory.

Answer 1

要刷新图像，应使用以下选项： SDWebImageRefreshCached

[imageView sd_setImageWithURL:url placeholderImage:nil options:SDWebImageRefreshCached];